β-catenin mediates stress resilience through Dicer1/microRNA regulation.

β-catenin mediates stress resilience through Dicer1/microRNA regulation.
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β-catenin通过DICER1/microRNA调节介导了应力弹性。

DOI:
10.1038/nature13976
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发表时间:
2014-12-04
期刊:
影响因子:
64.8
通讯作者:
Nestler, Eric J.
Nestler, Eric J.
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Dias, Caroline;Feng, Jian;Sun, Haosheng;Shao, Ning yi;Mazei-Robison, Michelle S.;Damez-Werno, Diane;Scobie, Kimberly;Bagot, Rosemary;LaBonte, Benoit;Ribeiro, Efrain;Liu, XiaoChuan;Kennedy, Pamela;Vialou, Vincent;Ferguson, Deveroux;Pena, Catherine;Calipari, Erin S.;Koo, Ja Wook;Mouzon, Ezekiell;Ghose, Subroto;Tamminga, Carol;Neve, Rachael;Shen, Li;Nestler, Eric J.

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β-连环蛋白是一种多功能蛋白质,在成熟的中枢神经系统中发挥重要作用;其功能障碍与包括抑郁症在内的几种神经精神疾病有关。在这里,我们发现β-连环蛋白介导了小鼠延髓核(一个关键的大脑奖励区域)中的前弹性和抗焦虑作用,该作用由D2型中型多刺神经元介导。使用全基因组β-连环蛋白富集作图,我们鉴定了小RNA中的Dicer 1重要性(例如,microRNA)生物发生-作为介导恢复力的β-连环蛋白靶基因。在慢性应激的背景下,从丘脑核中切除β-连环蛋白后的小RNA谱揭示了与弹性相关的β-连环蛋白依赖性microRNA调节。总之,这些发现确立了β-catenin作为行为弹性发展的关键调节因子,激活了包括Dicer 1和下游microRNA的网络。因此,我们提出了一个新的治疗目标,以促进压力恢复的发展基础。
β-catenin is a multi-functional protein that plays an important role in the mature central nervous system; its dysfunction has been implicated in several neuropsychiatric disorders, including depression. Here we show that β-catenin mediates pro-resilient and anxiolytic effects in mice in the nucleus accumbens, a key brain reward region, an effect mediated by D2-type medium spiny neurons. Using genome-wide β-catenin enrichment mapping, we identify Dicer1—important in small RNA (e.g., microRNA) biogenesis—as a β-catenin target gene that mediates resilience. Small RNA profiling after excising β-catenin from nucleus accumbens in the context of chronic stress reveals β-catenin-dependent microRNA regulation associated with resilience. Together, these findings establish β-catenin as a critical regulator in the development of behavioral resilience, activating a network that includes Dicer1 and downstream microRNAs. We thus present a foundation for the development of novel therapeutic targets to promote stress resilience.
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